When an electron of an atom returns from an excited state to the ground state, it emits energy in the form of a photon. How does the change in energy level compare to the energy of the emitted photon?

What is 3 + 2 + 39 (3600000-78+9900

How do polyatomic ions form?

What is harder to pull apart a sodium ion from a chloride ion or a potassium ion from a chloride ion?

When copper (ii) carbonate is heated if forms copper (ii) oxide and carbon dioxide?

Which evidence supports the idea that Cosmic Microwave Background radiation is a remnant of the Big Bang? A. Its temperature is uniform. B. Its temperature fluctuates greatly. C. Its mass fluctuates greatly. D. Its mass is uniform.

Becky leaves home and write a distance of 30 KM it took her 2.5 hours what is her speed

Describe the weather associated with a high presurre system

Which of the following is equal to distance/time?

Which of the following should you always wear to avoid being thrown from a vehicle and then crushed if it tips over?

If the titrant has a molarity of 0.1000 m and there are 45.00 ml of analyte present, what is the molarity of the analyte?